Table 1.

Comparison of environmental parameters between Treatments 1 and 2 during July 2003.

Parameters		Treatment 1			Treatment 2		t
		NS 1)	Mean	S.D. 2)	Mean	S.D.
Thermal Environment	Air Speed (m/s)	10	2.25	0.07	0.06	0.005	96.98 ***
	Temp (°C)	10	26.45	0.018	32.23	0.15	−88.29 ***
	Humidity (%)	10	66.48	0.008	96.51	0.21	−270.48 ***
	AEI 3)	10	1758	81.9	2788	175.6	−204.3 ***
Gas Environment	NH3(ppm)	10	6.38	0.18	15.35	0.29	−80.37 **
	CO2 (ppm)	10	6528	10.04	11115	525.34	−27.61 ***
ACTH 4) (pg/mL)		10	15.97	5.55	26.27	7.01	−3.64 **
ADG 5) (g/day)		10	759.5	14.23	405.5	10.12	64.97 ***
FE 6) (D’less)		10	0.63	0.015	0.40	0.007	36.02 ***
Animal Behavior	Lying 7)	10	4.50	0.17	19.25	0.31	−129.11 ***
	Standing	10	9.28	0.13	2.36	0.33	61.24 ***
	Sitting	10	6.44	0.36	2.74	0.30	24.44 ***
	Drinking	10	10.19	0.24	11.63	0.49	−8.21 ***
	Eating	10	8.86	0.31	3.19	0.43	33.48 ***
	Fighting	10	0.68	0.41	0.80	0.28	−0.755

^***P < 0.001;

^**P < 0.01;

^*P < 0.05;

¹⁾NS: Number of Samples;

²⁾SD: Standard Deviation;

³⁾AEI: Air Enthalpy Index;

⁴⁾ACTH: adrenocorticotropic hormone;

⁵⁾ADG: Average Daily Gain;

⁶⁾Feed Efficiency: weight gain/feed intake;

⁷⁾Lateral recumbency.